The use of lc and lemma_lc attributes can significantly increase the speed of various query operations. You can modify your corpus configuration files in order to include definitions of the lc and lemma_lc attributes. Both attributes can be calculated dynamically by including lines as follows:

To check that lc/lemma_lc is present in the corpus, do a simple search for a word and click the info icon next to the frequency per million, labelled (3) in the screenshot. This will display the actual CQL used to execute the query.

if the query uses word as the attribute, e.g. [word=”(?i)calendar” | lemma=”(?i)calendar”], lc/lemma_lc is not present

if the query uses lc and lemma_lc, e.g. [lc=”calendar”|lemma_lc=”calendar”], lc/lemma_lc are present